This paper reports the dark conductivity and photoconductivity of amorphous Hg_(0.78)Cd_(0.22)Te thin films deposited on an Al_2O_3 substrate by RF magnetron sputtering.It is determined that dark conduction activation energy is 0.417 eV for the as-grown sample.Thermal quenching is absent for the as-grown sample during the testing temperature zone,but the reverse is true for the polycrystalline sample.Photosensitivity shows the maximum at 240 K for amorphous thin films,while it is higher for the as-grown ... 相似文献
介绍了在近地空间环境的理想条件下,即时全球打击(prompt global strike,PGS)武器地球曲率限的最大可探测距离的计算方法.根据黑体辐射理论,估算了PGS在短波红外和日盲紫外波段的辐射量值.当PGS飞行速度高于5马赫数时,其辐射峰值波长位于短波红外波段,最适合使用短波红外探测器.虽然与短波红外能量相比,... 相似文献